Dustbie aktiengesellschaet



Patented Man". 6, 1928.

UNITED STATES PATENT OFFICE.

testimony whereof 1 affix my signatur(A l...Dom BECK'.

Qubs'zmces. from 100 parts In cucum 'fuorlde lcum chm'jde will be prals s: thick@ Fm' usance, at 650@ C.. of' n. 1119.111 @ont 5() parts oZ 

